chore: initial commit (extracted from Launchers monorepo)

Plugin: ns7zip v2.0.0
Architectures: x86-ansi, x86-unicode, amd64-unicode
License: LGPL-2.1-or-later

versions/25.01/CPP/7zip/Compress/BZip2Crc.cpp

@@ -0,0 +1,28 @@
+// BZip2Crc.cpp
+
+#include "StdAfx.h"
+
+#include "BZip2Crc.h"
+
+MY_ALIGN(64)
+UInt32 CBZip2Crc::Table[256];
+
+static const UInt32 kBZip2CrcPoly = 0x04c11db7;  /* AUTODIN II, Ethernet, & FDDI */
+
+void CBZip2Crc::InitTable()
+{
+  for (UInt32 i = 0; i < 256; i++)
+  {
+    UInt32 r = i << 24;
+    for (unsigned j = 0; j < 8; j++)
+      r = (r << 1) ^ (kBZip2CrcPoly & ((UInt32)0 - (r >> 31)));
+    Table[i] = r;
+  }
+}
+
+static
+class CBZip2CrcTableInit
+{
+public:
+  CBZip2CrcTableInit() { CBZip2Crc::InitTable(); }
+} g_BZip2CrcTableInit;